You sure that the change didn‘t happen from plug 2 to 1?! Plug 2 is (mostly) using Swisscom‘s BBCS infrastructure, while plug 1 belongs to ewz and is used by other service providers (Disclaimer #1: this applies only to Zurich, other locations may differ; Disclaimer #2: Init7 is using both plug 1 and 2 in Zurich for Fiber7, but not BBCS).
The latency drop could explain if your connection is no longer on BBCS, as it usually adds about 5 to 10ms. -- Fredy Künzler Init7 (Switzerland) Ltd. Technoparkstrasse 5 CH-8406 Winterthur https://www.init7.net/ > Am 29.11.2022 um 12:49 schrieb Fabian Wenk via swinog > <swinog@lists.swinog.ch>: > > Hello Mat > >> On 29.11.2022 10:41, Mat Kowalski via swinog wrote: >> For interested, here are 3 graphs presenting the drop. For every graph the >> left side is OTO#1 and the right is OTO#2. Monday morning was the time of >> changing the line: >> 1) https://i.ibb.co/qRL1Hyb/1.png <https://i.ibb.co/qRL1Hyb/1.png> > > I do have a connection on OTO Plug 1 in Zürich, even with the EWZ provided > Fiber/Ethernet bridge (4 Ethernet-Ports), with one port used for a line to > Cyberlink (1 Gbit/s). > External physical systems within Switzerland are mostly 2 - 2.5 ms with IPv4, > IPv6 sometimes slightly more. > The DNS at 8.8.8.8 / 2001:4860:4860::8888 has 1.8 ms. > And the VM I have at ungleich.ch, has 4.7 ms (IPv4), and 5.2 ms (IPv6). > > Almost a decade ago I had a MC2-based (copper) line with 10 Mbit/s from > Cyberlink and I do remember that for systems within Switzerland it was also > at ~3 ms. > I also have a Sunrise/UPC Cable connection with IPv4 only, there the latency > is ~21.5 ms and 25.4 ms (for the VM). But during the night (since around end > of August) it is significantly higher, sometimes even above 50 ms. This is > not the first time and it usually does improve again after a few month, e.g. > when they split the cable segment into smaller areas. > > So for me it seems that your ISP probably has the most influence for the > latency of your line with their infrastructure and transit behind. > > > Best regards, > Fabian > _______________________________________________ > swinog mailing list -- swinog@lists.swinog.ch > To unsubscribe send an email to swinog-le...@lists.swinog.ch _______________________________________________ swinog mailing list -- swinog@lists.swinog.ch To unsubscribe send an email to swinog-le...@lists.swinog.ch
